Subtract 27/20 from 21/9
1st number: 2 3/9, 2nd number: 1 7/20
21/9 - 27/20 is 59/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
21/9 = 21 × 20/9 × 20 = 420/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
27/20 = 27 × 9/20 × 9 = 243/180 - Subtract the two like fractions:
420/180 - 243/180 = 420 - 243/180 = 177/180 - After reducing the fraction, the answer is 59/60
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